Seems about right. Seir did a better job with light consistency, light sources, and right shading saturation, thus darker and more realistic looking images. Sometimes made them slightly more gritty as well.
On the other hand, they are cartoon characters, and they are still supposed to look cartoony. I guess how much cartoony depends on personal opinion of the readers of the comic. Nevertheless, those "errors" aren't very important, especially in a bright and colourful cartoon-based picture.
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